# 10 Examples of Ohm’s law

**Ohm’s law** states that the **current** through a **conductor** is directly proportional to the voltage across the conductor and inversely proportional to the **resistance** of the conductor.

Ohm’s Law governs current, voltage, and resistance in devices like phone chargers, circuits, electronics, wires, and **insulators**. It determines **electrical power**, safety limits, and battery life.

**Examples of Ohms law**

Ohm’s Law describes the relationship between voltage, current, and resistance in electrical circuits. Here are 10 real-world examples of Ohm’s Law.

### 1. Phone Chargers

A very common example of Ohm’s law is a phone charger. The voltage and resistance are fixed in a phone charger, determining the amount of current that can flow to charge your phone battery according to Ohm’s Law.

### 2. Circuit Breakers

Circuit breakers use Ohm’s Law to calculate overcurrent conditions from voltage and resistance specs and trip the breaker when unsafe currents occur.

### 3. Electrical Power

The power dissipated in a resistor is calculated using current and resistance variables from Ohm’s Law: P=I^{2}R. More current and resistance means more power.

### 4. Electronics

Engineers use Ohm’s Law to determine the right resistance values for resistors in electronic devices to achieve proper voltages and currents.

### 5. Electric Shock Hazards

Higher currents from Ohm’s Law pose greater electric shock risks. Using lower voltages in wet areas reduces current flow through the body’s resistance.

### 6. Lightbulb Brightness

A very common device that we observe in our daily lives is a lightbulb. A lightbulb’s brightness depends on its resistance. Lower resistance bulbs draw more current for greater brightness based on Ohm’s Law.

### 7. Battery Life

Batteries with lower internal resistance allow more current flow and usage. High internal resistance drains batteries faster per Ohm’s Law.

### 8. Wire Gauges

We can determine the wire gauge with the help of Ohm law. Thicker wires have less resistance, allowing higher currents without overheating according to Ohm’s Law limits.

### 9. Electric Fuses

An electric fuse is a very common example of ohm law. Fuses contain specific resistances designed to melt and break circuits when current exceeds desired levels as determined by Ohm’s Law.

### 10. Insulators

Insulators limit current flow because they have extremely high resistance values. No conduction occurs according to V=IR.

Ohm’s Law gives us the tools to engineer safer, more efficient electrical systems and components.

## Leave a Reply